ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
Infinity Global Property
Flash 5
a constant representing an infinite number
read-only
Infinity
Description
A number that exceeds the maximum allowed numeric value in ActionScript is represented by the numeric constant Infinity (although incalculable numbers are represented by NaN). The largest value allowed in ActionScript is represented by Number.MAX_VALUE, which equates to 1.79769313486231e+308. Exceeding the largest allowed number in ActionScript is known as an overflow condition and is typically caused by a mathematical error.
Example
The result of a calculation that exceeds the largest allowed number is Infinity. For example:
Number.MAX_VALUE * 2; // Yields Infinity
Infinity also results when dividing a positive number by zero:
1000 / 0; // Yields Infinity
Usage
Infinity is shorthand for Number.POSITIVE_INFINITY.
